Jul 30, 2025
A slow-moving and localized thunderstorm produced between 3 and 3.5 inches or rain during 90-minutes across the Adair Run basin. Rainfall rates were estimated by radar to be up to 4 inches per hour at times. CREST Unit streamflow was estimated to be as high as 450 cfs per mi^2, while the 3-hour ARI reached as high as a 200-year event by 8:45 pm EDT.
Source: NOAA National Weather Service Storm Events Database (event 1293284). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Mercer County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.